Chloe Kim

As 2018 comes to an end, X Games commentators Brandon Graham and Craig McMorris storm the ESPN SportsCenter studio to count down the top 10 biggest moments of the year. Watch the full episode from the ABC broadcast of "World of X Games: Best of X Games 2018" right here.

Sitting in second place on her final run in Snowboard SuperPipe at X Games Aspen, Chloe Kim dropped in and landed her first back-to-back 1080 combo since 2016. The only woman to land the combo in competition then became the first athlete in X history to earn four gold medals before the age of 18.